#box {
  margin: 0 auto;
  position: relative;
  width: 400px;
  height: 200px;
  border-radius: 18px;
  overflow: hidden;
  background-image: linear-gradient(-270deg, #abdcff, #0396ff 80%);
}

#box::before {
  content: '';
  display: block;
  position: absolute;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0496ff, #58b9ff 90%);
  bottom: -80px;
  right: -50px;

}
#box::after {
  content: '';
  display: block;
  position: absolute;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: linear-gradient(135deg, #008cff, #58b9ff 90%);
  top: -40px;
  right: -50px;
  opacity: 0.8;
  transform: translateZ(-1px);
}
.little-ball {
  position: absolute;
  width: 60px;
  height: 60px;
  background-image: linear-gradient(270deg, #36abff 10%, #71c4ff 100%);
  border-radius: 50%;
  top: 40px;
  left: 120px;
  opacity: 0.5;
}
.kcmc {
  color: #fff;
  font-size: 32px;
}
